Henry turner



mo WHo'M 1T MAY ooNonnN:

HENRY TURNER, or .,sosroN, MASSACHUSETTS, AssIeNoR To EIMS-ELF A Nu-MnLLnN nnnujoFsAMsPLAoE. t

Leners Paem'lvo. 75,814, dated March 24, 186s.

IMPROVEMENT I N SPRING-GRAIN'.

, filg Stimmt ruimt tu in their ttttm bahut mit making mi si tlge time.

Be it known-that I,HENRY TURNER, of Boston, in the county offSuiiolk, ,and State of MassachusettshaveI4 invented certain new and useful Improvements in Springs; and I hereby declare the following to be a full,

clear, and exact description of=thesame, reference being had to Vthe accompanying drawings, .itr'which- 'l `Figure -1 is an'elevtttion, and v i I l I "Figure 2 a longitudinal central section of a series fotV springs jointed together. Y .Figure S is a like-section of the links of whcheach spring is partly composed', with the 'surrounding ruh- `ber oi'Y elasticl body removed.

'parts'it con'nefcts, from being injured.

Figures land 5,ar'e end Views of the said links.v l 4 The object of my invention is tofproduce a spring especially adapted for use as a traction-spring; that isV t'o say, inall cases where aspring is required which, while calculated to sustain a great amount of strain, willv atthe same time yield somewhat to'any sudden tug or pull, so as to prevent the spring itself, as well las the When a numberl ot'lsuch springs rare hingedvor pivoted one to another, alchain will be formed, the-.links otv Iwhich, instead of'being rigidan'd unyielding, are .elastic and extensible. .A chain of this kind may be adapted 4to many uses. For4 instance, it may be employed `to form harness-traces, orv for analogous purposes, so as to prevent thejerks and sudden strainswhich often injure both the horse, as well-as -the vehicle to which he is attached. It may also be usedin the rigging of vessels, to lessen the sudden tug or strain incident to the shifti ing of the sails, and may be applied to many other 'uses which need not be mentioned.

To enable-others skilled in `the art to understand and use my invention, Iwill nowproceed to describe the manner in which the same is or may be carried into effect, by reference to the accqmpauying'drawings.

The spring. is composedV of the metallink's AB, provided with heads or disks mounted on their ends C D,

and the rubber or othersizitable elastic and compressible body, E. The rubber E, inthe drawing, hasa cylin ydrical form, and is mouhted `nponthe'links A B, which lie side by side, and carry the disks C D, between whichthe same is held; Infor-der to. render the disks capable of moving towards and away from one another, so aste.

cotnpressthe4 spring with greater` or less force, as required, each link passes through la slot formed in the head or disk 4of the other link. The end of the rod or link A passes through and slides'in the slot b of the disk 1),.

and the link B passes through the slot ain the diskvG. By pullngvthe-ends of the rods,l which projectzbeyond the disks, in opposite directions, it will be seen that thedisks are thereby caused -to approach one-another, each disk sliding uponfthe stem or link of the other. A v i In order to give greater strength to the spring, and to prevent it from being twisted or bent laterally, olie Yof the links, B, may be-bifurca'ted or fo'rkedfso as to receive between its sides the other link, A. The arrangement of the openings or slots in .the heads of the links, when this tongue-arid-groove formation is employed, is shown in iigs. 4 and 5, the openings a a, to receive the forked link B, being on each side ofthe centre of the disk or head C, while the opening b, in the head D, for the reception of theendfof the link A, is in the centre of thehead. Itis manifest, howevcr, without further prolonging-this4 explanation, that Vthe arrangement 'of I these links may be considerably varied, without departing'from the principle of. my invention.

In gs. 1 and 2 is repre-sented a series of springs pivoted together, so as to form a chain. The method ofl uniting them is simple, the projecting end of4 the I ink A', of one spring, being insertedbetween the ends of the forked link B of the next succeedingrspring, where it is held by means of a pin, c, by which the twoare pivoted or hinged together. It' will bevnnderstood that, instead ofv the rubber E, any other suitable elastic. body, or`

metal spring, capablerof being cbmpressed, can be employed. I prefer, however, theform and constituent parts of the spring shown in thc drawings, as it is thereby made light Vand cheap, as well as e'e'ctive.l

When a chain of this kind is usedfortraction', or other-purposes above named, it yields toa suddenjerk, or to a strain or draught, until the resistance it offers (which constantly increases with the extension of 'the links, and the consequent comprcssionzof 'the' elastic v.body `held by them,) is in excess of the power applied, or

of the resistance et' the object-to be either helder moved. At this point it ceases to yield, and becomes, to-all I intents and purposes, like au ordinary chain or rope.

Haring described myinvention, and the manner in which the same is or may be carried into eii'ect, what I claim, and desiie to secure by Letters Patent, -ist l 1. The combination, in'a spring suchvas described, of the bifurcated or forked link B, and its slotted head, with the link A, and its slotted head, under the arrangement and for operation as herein described, so that the 'end of eachlink shall pass through and be capable of sliding in the head of the other link, as and for the purposes set forth. l

2. The combination, with the sliding links, and their slotted or perforated heads, arranged as described, of the rubber cylinder or other elastic body, lmounted upon said links, and interposed between their heads, af and for the purposes herein shown and specified., v

3. The combination of two or more springs, such as described, in the manner herein shown and set forth, so as to form au elastic and extensible chain.- I

In testimony whereof, I have signed my name to this specification before two subscribing witnesses.

I i HENRY TURNER.

Witnesses:

IsArAH KNowLEs, Jr., S. Z. BoWMAN. 

